The DocumentThe Document is a new kind of mash-up between documentaries and radio. It goes beyond clips and interviews, mining great stories from the raw footage of documentaries present, past and in-progress. A new episode is available every other Wednesday on iTunes and wherever fine podcasts are downloaded.

To the PointA weekly reality-check on the issues Americans care about most. Host Warren Olney draws on his decades of experience to explore the people and issues shaping – and disrupting - our world. How did everything change so fast? Where are we headed? The conversations are informal, edgy and always informative. If Warren's asking, you want to know the answer.

There Goes the NeighborhoodLos Angeles is having an identity crisis. City officials tout new development and shiny commuter trains, while longtime residents are doing all they can to hang on to home. This eight-part series is supported by the Conrad N. Hilton Foundation.

Volcanoes around the World; Earth Day in Los Angeles

On this 40th anniversary of Earth Day, we look at efforts to make LA's environment more livable. On our rebroadcast of To the Point, this week's volcanic eruption is a wake-up call for the airline industry and unprepared regulators.

FROM THIS EPISODE

On this 40th anniversary of Earth Day, we look at efforts to make Los Angeles' environment more livable. We'll see how Tree People has gone national but stayed local, how a measure of what's called "environmental justice" has been achieved and what's being done to power down to prepare for the end of the age of oil. On our rebroadcast of today's To the Point, this week's volcanic eruption is a wake-up call for the airline industry and unprepared regulators. It's also a lesson in humanity's inability to control nature. How likely are bigger eruptions? Is there any way to get ready?

Air travel in Europe is almost back to normal, although shifting winds have sent plumes of volcanic ash over Scotland and Scandinavia, forcing some airports to close again. Even as Iceland's volcano calms down, damages from this week's eruption continue to mount and so do complaints about the way it's been handled. We hear about volcanoes -- past, present and future -- and learn how to prepare for volcanic disruptions.

Acid rain was reduced by new federal regulations on sulfur emissions; the EPA got the lead out of gasoline; it took an international treaty to protect the Ozone layer. But a lot of environmental progress has been made on the local level. Then 15 years old, Andy Lipkis started the Tree People three months after the first Earth Day 40 years ago. We speak with Lipkis and others about local efforts at protecting the environment and the quality of life in Southern California.